dassaur
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Posting this as a potential solution for people wanting to run wires from the engine bay to the dash, as there were no solutions I could find on the forum.
This is how I did it:
Pop hood, remove wiper scuttle. It's held in by clips (the ones where you stick a screwdriver between the head and body and lift). The scuttle is in two parts, you only need to remove as many clips as cover the entire LHS assembly. I also removed the 10mm bolt on the LHS and bent the steel slightly up to give me clearance. Removing the scuttle grants you access to the cabin air filter so kill 2 birds with one stone if required. See pic (ignore yellow snake):
Now jack, support and remove the wheel from the LHS. Remove the wheel arch guard too. I found it's easier to remove it completely than to remove half and have it flap around. It's held in place by a few t15 torx and more clips.
Now that's open, let's move inside. Remove glove box door and base. 7mm socket and more of our favourite clips. Also remove the fabric between the base of the glove box and the floor. It's held in with, you guessed it, more clips.
We then need to remove the device that secures the floor carpet to the firewall fabric. It just unscrews, the photo below is with it taken off:
Now just behind the upper part of that carpet you will find a grommet. That leads to the cavity between the cabin air filter and the outer body panel. Take the grommet out. I then drilled a 12mm hole in the grommet, and fed the wires I wanted to pass through the grommet. Here's a pic of the grommet before taken out, it was really hard to get a good one.
Now you can simply feed your cable through and grab it down into the wheel arch, then through the gaps into the engine bay. See below pics:
I hope this is of help to someone! It took me ages to work out how to do it without drilling through the firewall.
This is how I did it:
Pop hood, remove wiper scuttle. It's held in by clips (the ones where you stick a screwdriver between the head and body and lift). The scuttle is in two parts, you only need to remove as many clips as cover the entire LHS assembly. I also removed the 10mm bolt on the LHS and bent the steel slightly up to give me clearance. Removing the scuttle grants you access to the cabin air filter so kill 2 birds with one stone if required. See pic (ignore yellow snake):
Now jack, support and remove the wheel from the LHS. Remove the wheel arch guard too. I found it's easier to remove it completely than to remove half and have it flap around. It's held in place by a few t15 torx and more clips.
Now that's open, let's move inside. Remove glove box door and base. 7mm socket and more of our favourite clips. Also remove the fabric between the base of the glove box and the floor. It's held in with, you guessed it, more clips.
We then need to remove the device that secures the floor carpet to the firewall fabric. It just unscrews, the photo below is with it taken off:
Now just behind the upper part of that carpet you will find a grommet. That leads to the cavity between the cabin air filter and the outer body panel. Take the grommet out. I then drilled a 12mm hole in the grommet, and fed the wires I wanted to pass through the grommet. Here's a pic of the grommet before taken out, it was really hard to get a good one.
Now you can simply feed your cable through and grab it down into the wheel arch, then through the gaps into the engine bay. See below pics:
I hope this is of help to someone! It took me ages to work out how to do it without drilling through the firewall.
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